Electrochemical Studies of Dopamine, Ascorbic Acid and Uric Acid at Lignin Modified Carbon Paste Electrode by Cyclic Voltammetric
Chandrashekar C Vishwanatha, Bahaddurghatta E Kumara Swamy* and K Vasantakumar Pai
Department of P.G .Studies and Research in Industrial Chemistry, Kuvempu University, Jnana Sahyadi, Karnataka, India
- *Corresponding Author:
- Kumara Swamy BE
Department of P.G .Studies and Research in Industrial Chemistry
Kuvempu University, Jnana Sahyadi
Shankaraghatta-577451, Shimoga, Karnataka, India
E-mail: [email protected]
Received Date: February 10, 2015; Accepted Date: March 23, 2015; Published Date: March 26, 2015
Citation: Vishwanatha CC, Swamy BEK, Pai KV (2015) Electrochemical Studies of Dopamine, Ascorbic Acid and Uric Acid at Lignin Modified Carbon Paste Electrode by Cyclic Voltammetric. J Anal Bioanal Tech 6:237. doi: 10.4172/2155-9872.1000237
Copyright: © 2015 Vishwanatha CC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
In this study the lignin modified carbon paste electrode was applied for the electrochemical determination of dopamine, ascorbic acid and uric acid at pH 7.2 PBS solution with scan rate 50 mVs-1. The modified carbon paste electrode shows good electrochemical activity towards dopamine and ascorbic acid, where as in uric acid shows decrease in peak current when compared to bare carbon paste electrode. The effect of scan rate and concentration was studied at modified carbon paste electrode. The electrode process was found to adsorption and diffusion controlled and the detection limit was found to be 1.4 × 10-5 M.